html,body{
    height: 100vh;
    width: 100vw;
    margin: 0;
    list-style: none;
    font-size: 14px;
    position: relative;
}
/***************响应式**************/
@media (max-width:320px){
    html{
        font-size: 10px;
    }
}
@media (min-width:320px){
    html{
        font-size: 13px;
    }
}
@media (min-width:361px){
    html{
        font-size: 18px;
    }
}
@media (min-width:768px){
    html{
        font-size: 24px;
    }
}
@media (min-width:800px){
    html{
        font-size: 26px;
    }
}